react-native get started demo didn't work, print ":CFBundleIdentifier", Does Not Exist

[xhlwill]

I run command 'react-native run-ios' in the latest react-native-cli@1.2.0, but this error keep showing

...
Command failed: /usr/libexec/PlistBuddy -c Print:CFBundleIdentifier build/Build/Products/Debug-iphonesimulator/AwesomeProject.app/Info.plist
Print: Entry, ":CFBundleIdentifier", Does Not Exist

the full error log is here.

[xhlwill]

and error

error: use of undeclared identifier 'UIUserInterfaceIdiomCarPlay'; did you mean 'UIUserInterfaceIdiomPad'?

[xhlwill]

finally I read this issue, and it's solved after I upgraded Xcode from 7.2 to 8.1, curious about why?

[scurlyhair]

this issue might be help:
facebook/react-native#14423

[phasedarray]

I found this issue may come out if 8081 port is occupied(In my case it is occupied by McAfee).
Run command sudo lsof -i :8081 to check which process has token the 8081 port.
Or you can run react-native run-ios --port 8082 to specify another port.